Carbureter.



No. 858,251. PATENTED 00T. 15, 1907.` L. BOLLEE. GARBURETER, APPLICATION FILED APR. 4, 1904.

2 SHEETS-SHEET l.

PATENTED OCT. l5, 1907.

L. BULLE/E.

GARBURETER. J APPLIOATION FILED APR. 4, 1904.

2 SHEETS-SHEET 2.

LEON BoLLn, or Ln MANS, FRANCE.

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Specification of Letters Patent.

Patented osais, 1907.

Application filed April 4,1904. Ssrial'No. 201,549.

To all 'whom 'it may concern: v

Be it known that I, LnoN BonLE, a citizen ofthe Republic of France, residing at Le Mans,-in France, have invented certain new and useful Improvements in or Relatingto Carbureters, oi which the following is a specification.

Experience has shown that a carburetor lcannot supply a perfect mixture unless there is asuitable relation not only between the openings for the air and for the uel, but also between the cross-section of the passage for the mixture at the place where it is formed, and the openings just mentioned, and also as regards the quantity of the mixture supplied. It follows, therefore,l that, if that quantity of the mixture is modified, it is necessary to modify at the same time, in order to work under the most perfect conditions, the passages for the fuel, air and mixture, at the point where the latter is formed. We will designate in the following description the point in question by the name oi carbureting chamber.

The invention .is illustrated by way of example in the accompanying drawings in which Figure l shows a sectional View of a device according to this invention, Fig. 2 being a horizontal section thereof through the center of the carbureting chamber. Fig. 3 shows a sectional view oi a modified construction: Figs. 4 and 5 illustrate a further modified construction Vof the invention. Figs. 6 and 7 show sections of a vconstruction having hinged walls for the carbureting chamber. l

lhe construction shown in Figs. 1 and 2, comprises a chamber a of rectangular cross-section, provided about the middle of its length with a fuel inlet sprayer f and its regulating valve or plug c operated by a cam t' of sui*- able shape; and at each side two plates blocks or pistons d e preferably recessed as shown, which, under the action of springs f, have the tendency to come closer together and to reduce the area of the central mixing space and air supply passage. These plates can, however, be moved away from each other by means of a cam y acting on levers h to which said plates are connected. The spring plug c is itself controlled by a cam 1' of a suitable shape. The chamber a is formedl as an enlargement of or is -interposed in the conduitfor the supply of air` to be carbureted and for the delivery oi the carbureted air to the engine. The cams g andj are operated either by an apparatus depending on the speed oi the suction, or on the speed of the engine, or simply by hand, according to the opinionV formed by the driver as to the speed oi suction. Instead of causing the plates d e to open in rectilinear parallel directions, each plate could be hinged at one of its ends and operated by turnvfing it about its pivot, somewhat after the manner of a bellows; Suche construction is shown in Figs. 6 and 7 wherein the plates e are pivoted at e and are operated by means of the levers f and h as in the, previous case. Or the plates could be fitted in a tubular casing of curved shape (Fig. 3). t

In a modified construction, shown in Figs. 4 and 5, the plates d e are replaced by two cylinders d e', the circumferences of which are -provided with grooves j, the cross-section oi which gradually increases so that the sizeof the air supply passage round the sprayer b can be increased or reduced by a simplesimultaneous.

rotation of the cylinders d e which'are connected to that end by gears k Z, one of which is driven in any suitable manner, such as, for linstance, ,by a toothed racko or some other means, controlled by the engine or driver.

yThe regulating plug cof the sprayer f, which is screwed into, the tube or casing is operated by means of gear wheels m n. It would be still simpler to have the plug e mounted by means of a springend operated by means of a 'cam secured to one of the gear wheels. It will be obvious that the area of the carbureting chamber round the sprayer could also be rendered expansiblein a variety of ways other than that shown, and it is not intended to limit the scope of this invention to the construction shown and described.

What I claim as my invention and desire` to'secure by Letters Patent is:-' v

1. A carbureter comprising a variable sized mixingv chamber constituted by two movable walls therein, a fuel outlet pipe extending into said variable sized chabe'r, and means for simultaneously and proportionately regulating the size of the mixing chamber and the opening of the fuel outlet, substantially as set forth. l

2. A carbureter comprising' a variable sized .mixing chamber constituted bytwo movable walls therein, springs acting on said walls, a fuel outlet pipe extending into said variable sized chamber, and means for simultaneously and proportionately regulating the size of the mixing chamber and the opening of the outlet, substantially as set forth.

3. A carbureter Acomprising a v'ariable sized mixing chamber constituted by two movable walls therein, a fuel supply, pipe extending into said variable sized chamber, a valve for regulating the fuel outlet, and means outside the chamber for simultaneously and proportionately regulating the size of the mixing chamber und the opening of the fuel chamber constituted by .oppositely arranged and recessed lmovable walls within said chamber; a fuel supply pipo extending into said chamber between the movable walls, a valve for regulating the fuel nozzle opening, and means outside the chamber for simultaneously operating the movable walls and valve substantially as set forth.

5. A carburetor comprising a casing, a fuel supply pipe therein, an adjustable valve therefor, rotary kcylinders on either side of said pipe and valve, tapering circumferential grooves in said cylinders and means outside the casing for simultaneously yadjusting the fuel supply valve und the cylinders, substantially as 'set forth.

6. A carbui'eter comprising an air supply conduit, a variable sized chamber in said conduit constituted by two spring-controlled movable walls therein, means for moving said walls from the outside and a fuel supply pipe extending into said variable sized chamber substantially as set forth. j

7. A carbureter -comprising an air supply .conduit, a variable sized chamber in said conduit onstltuted by oppositely arranged and recessed movable Walls within said chamber, a fuel supply pipeextending into said .chamber between the movable walls, a valve therefor, and

means outside the chamber for operating the movable walls 10 and valve substantially as set forth.

In testimony whereof I have signed my name to this speclicatin in the presence of two subscribing witnesses.

LEON BOLLE.

Witnesses:

HANsoN C. Coxn, JEAN Ronnn'r. 

